Exposure looks good on yours, though the mountain region looks a little flat. Best things that will help you get more "punch" out of your shot, like you are seeing with the one you linked to is to consider and research the following:
1) Local contrast adjustments - this is using layermasks and is where you make local adjustments to sections of the photo, rather than to the whole photo. So in the above shot of your own you might only increase contrast in the mountain areas. Similarly you can use this basic method to adjust saturation, brightness, shadows, curves etc.. - basically anything with a local element. It's a very powerful form of editing and well worth learning.
2) Golden hours - the hour before and after sunset and sunrise are commonly referred to this way because they are the times of the day when the light from the sun is naturally at its softest and most even. Whilst also holding a very vivid element of colour. Midday light, by contrast, is very harsh, glaring and often lacks that warmth of colour. In landscape work this single element (light itself, not necessarily always the golden hours) is what will often split a good shot from a dull shot from an outstanding photo. The stories of landscape photographers travelling to the same spot day after day for weeks, months (even years sometimes) is not an exaggeration - its a mark of difference between good and excellent
3) Composition - this isn't just reading about the rule of thirds - there are leading lines, the golden circle, colours, brightness, etc... its a big topic and is another big change between shots that look snapshotty and those that look very good. Yours, by way of example (and to my eye) looks a little lacking in a "subject" or point of clear focus. The eye wanders and never really finds a point (or multiple points) of key interest to hold the gaze.